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Instrumentation cable part3
BS5308 Part 2 collectively screened, armored type-2 cables
Multicore PVC insulated without Individual pair screens but collectively screened. Table 6
Conductor
 size
Number of Pairs Thickness 
of Bedding
Dia. of 
 Armour wire
Thickness
 of Sheath
Nominal 
Overall Diameter
mm2 mm mm mm mm
0.50 (16/0.2)  0.8  0.9  1.3  11.4 
0.8  0.9  1.3  11.7 
0.8  0.9  1.3  12.3 
0.9  0.9  1.4  13.9 
10  1.1  0.9  1.5  16.7 
20  1.2  1.3  1.6  19.6 
40  1.3  1.6  1.7  26.7 
80  1.5  1.6  1.9  33.3 
0.75 (24/0.2)  0.8  0.9  1.3  11.7 
0.8  0.9  1.3  12.1 
0.8  0.9  1.4  12.9 
0.9  0.9  1.4  14.5 
10  1.1  0.9  1.5  17.5 
20  1.2  1.25  1.6  21.7 
40  1.3  1.6  1.8  28.5 
80  1.5  1.6  35.7 
1.5 (7/0.53)  0.8  0.9  1.4  12.9 
0.9  0.9  1.4  13.5 
0.9  0.9  1.4  14.3 
1.1  0.9  1.4  16.3 
10  1.2  1.25  1.6  20.4 
20  1.3  1.6  1.7  25.3 
40  1.5  1.6  1.9  31.6 
80  1.7  2.1  41.8 

Instrumentation cable
Color Code Sheet Appendix 1

No. of Pairs ‘A’Wire ‘B’Wire No. of Pairs ‘A’Wire ‘B’Wire
1 Black Blue 26 White Yellow
2 Black Green 27 Red Yellow
3 Black Green 28 Orange Yellow
4 Black Brown 29 Black Grey
5 Blue Brown 30 Blue Grey
6 Green Brown 31 Green Grey
7 Black White 32 Brown Grey
8 Blue White 33 White Grey
9 Green White 34 Red Grey
10 Brown White 35 Orange Grey
11 Black Red 36 Yellow Grey
12 Blue Red 37 Black Purple
13 Green Red 38 Blue Purple
14 Brown Red 39 Green Purple
15 White Red 40 Brown Purple
16 Black Orange 41 White Purple
17 Blue Orange 42 Red Purple
18 Green Orange 43 Orange Purple
19 Brown Orange 44 Yellow Purple
20 White Orange 45 Grey Purple
21 Red Orange 46 Black Turquoise
22 Black Yellow 47 Blue Turquoise
23 Blue Yellow 48 Green Turquoise
24 Green Yellow 49 Brown Turquoise
25 Brown Yellow 50 White Turquoise


BS6231 Instrumentation Cables


Application:
These cables are suitable for internal wiring of appliances and switch, control, metering and instrument panels of switchgear, etc

Manufacturing standards
BS6231, UL Style 1015, 1028, 1283, 1283, 1284; CSA TEW 105 ;
UL VW-1 Vertical Flame

Electrical Property

Size mm2 Max. DC 
Resistance at 20 ℃Ω/km
Current 
rating amp
Approximate 
volt drop constant 
MV/A/M 
0.5  39  11  46 
0.75  26  14  31 
19.5  17  22 
1.5  13.3  21  15 
2.5  7.98  30  9.1 
4.95  41  5.7 
3.3  53  3.8 
10  1.91  75  2.2 
16  1.21  100  1.4 
25  0.78  136  0.89 
35  0.554  167  0.64 
50  0.386  204  0.45 
70  0.272  259  0.32 
95  0.206  321  0.24 
120  0.161  374  0.19 
150  0.129  429  0.15 
185  0.106  496  0.13 
240  0.0801  595  0.092 
300  0.0641  680  0.073 
400  0.06  868  @70 0.145 

The voltage drop figures are for one cable only. For other circuit arrangements they should be adjusted as follows:
Single-phase 50Hz AC or 2-wire DC circuit’s x2
Three-phase 50Hz AC circuit’s x1.732
Instrumentation cable

BS6231 Instrumentation Cables


Main parameter
Part No. Size 
mm2
Stranding
 mm
Size 
AWG
Ul UL
Style
number
Nominal
 insulation 
mm
Nominal overall 
diameter
 mm
Weight 
kg/km
GH-IC-BS6231-0.50SQ 0.5 16/0.20 22 1015 0.8 2.6 12
GH-IC-BS6231-0.750SQ 0.75 24/0.20 20 1015 0.8 2.8 15
GH-IC-BS6231-1.000SQ 1 32/0.20 18 1015 0.8 3 18
GH-IC-BS6231-1.50SQ 1.5 30/0.25 16 1015 0.9 3.3 23
GH-IC-BS6231-2.50SQ 2.5 50/0.25 14 1015 1.0 3.7 34
GH-IC-BS6231-4.00SQ 4 56/0.30 12 1015 1.0 4.4 50
GH-IC-BS6231-6.00SQ 6 84/0.30 10 1015 1.3 5.1 71
GH-IC-BS6231-10.0SQ 10 80/0.40 8 1028 1.5 6.9 123
GH-IC-BS6231-16.0SQ 16 126/0.40 6 1283 1.5 8.6 209
GH-IC-BS6231-25.0SQ 25 196/0.40 4 1283 1.6 10.5 296
GH-IC-BS6231-35.0SQ 35 276/0.40 2 1283 2.0 11.9 400
GH-IC-BS6231-50.0SQ 50 396/0.40 1 1284 2.0 14.4 582
GH-IC-BS6231-70.0SQ 70 360/0.50 2/0 1284 2.0 16.7 796
GH-IC-BS6231-95.0SQ 95 475/0.50 3/0 1284 2.3 19 1025
GH-IC-BS6231-120SQ 120 608/0.50 4/0 1284 2.4 20.5 1282
GH-IC-BS6231-150SQ 150 756/0.50 MCM300 104 2.4 23.14 1627
GH-IC-BS6231-185SQ 185 925/0.50 MCM350 104 2.4 25.4 1959
GH-IC-BS6231-240SQ 240 1221/0.50 MCM500 104 2.8 28.66 2254
GH-IC-BS6231-300SQ 300 1525/0.50 MCM600 1015 - 31.5 3157
GH-IC-BS6231-400SQ 400 2013/0.50 MCM800 1284 - 36 4051
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